import Vue from 'vue';
import Router from 'vue-router';
// import Login from '../components/Login.vue'
const Login = () =>
    import ( /* webpackChunkName: 'login_home_welcome' */ '../components/Login.vue');
// import Home from '../components/Home.vue'
const Home = () =>
    import ( /* webpackChunkName: 'login_home_welcome' */ '../components/Home.vue');
// import Welcome from '../components/Welcome.vue'
const Welcome = () =>
    import ( /* webpackChunkName: 'login_home_welcome' */ '../components/welcome.vue');
// import Users from '../components/user/Users.vue'
const User = () =>
    import ( /* webpackChunkName: 'users_rights_roles' */ '../components/user/User.vue');
// import Rights from '../components/power/rights.vue'
const Rights = () =>
    import ( /* webpackChunkName: 'users_rights_roles' */ '../components/power/Rights.vue');
// import Roles from '../components/power/roles.vue'
const Roles = () =>
    import ( /* webpackChunkName: 'users_rights_roles' */ '../components/power/Roles.vue');
// import Cate from '../components/goods/Cate.vue'
const Cate = () =>
    import ( /* webpackChunkName: 'cate_params' */ '../components/goods/Cate.vue');
// import Params from '../components/goods/Params.vue'
const Params = () =>
    import ( /* webpackChunkName: 'cate_params' */ '../components/goods/Params.vue');
// import List from '../components/goods/List.vue'
const List = () =>
    import ( /* webpackChunkName: 'list_add' */ '../components/goods/List.vue');
// import Add from '../components/goods/Add.vue'
const Add = () =>
    import ( /* webpackChunkName: 'list_add' */ '../components/goods/Add.vue');
// import Order from '../components/order/Order.vue'
const Order = () =>
    import ( /* webpackChunkName: 'order_report' */ '../components/order/Order.vue');
// import Report from '../components/report/Report.vue'
const Report = () =>
    import ( /* webpackChunkName: 'order_report' */ '../components/report/Report.vue');

Vue.use(Router);

const router = new Router({
    routes: [
        { path: '/', redirect: '/login' }, // 重定向
        { path: '/login', component: Login },
        {
            path: '/home',
            component: Home,
            redirect: '/welcome',
            children: [
                { path: '/welcome', component: Welcome },
                { path: '/users', component: User }, // 用户列表
                { path: '/rights', component: Rights }, // 权限列表
                { path: '/roles', component: Roles }, // 角色列表
                { path: '/categories', component: Cate }, // 商品分类
                { path: '/params', component: Params }, // 分类参数
                { path: '/goods', component: List }, // 商品列表
                { path: '/goods/add', component: Add }, // 添加商品
                { path: '/orders', component: Order }, // 订单列表
                { path: '/reports', component: Report } // 数据报表
            ]
        }
    ]
});

// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
    // to：将要访问的路径
    // from：代表从哪个路径跳转而来
    // next是一个函数，表示放行； next() 放行 next('./login') 强制跳转

    // 如果用户访问的是登录页，直接放行
    if (to.path === '/login') return next()
        // 从sessionStorage中获取到保存的token值
    const tokenStr = window.sessionStorage.getItem('token');
    // 没有token强制跳转到登录页
    if (!tokenStr) return next('/login')
    next()
});

export default router;